High-power radial plunger pump
The invention belongs to mechanical field, specifically, the present invention relates to a kind of high-power radial plunger pump.
The high-pressure high-flow diaphragm pump of existing domestic and international production is three-throw crankshaft plunger case horizontally, or two-throw crank shaft plunger case is horizontal.Because plunger case adopts horizontally, just cause Curved shaft support point span excessive, for guaranteeing that power effectively exports the size that just must strengthen crankshaft journal and other associated components.Therefore adopt the equipment volume of this kind of mode of structure excessive, weight of equipment is overweight.
Chinese Patent Application No. is 200910102304.8, title is the application for a patent for invention of " eccentric promotion circle distribution formula plunger pump ", its technological scheme announced arranges cam in driving shaft end, outside cam, bearing is set, bearing contacts with the end of the plunger in housing, and plunger arranges Returnning spring.Rotated by cam, and the promotion of Returnning spring, plunger is moved reciprocatingly.
There is following shortcoming in this structure: 1, when cam rotates, plunger affects by lateral force all the time, and working life is short, cannot adapt to high pressure working environment.
2, force-transmitting part is many, complex structure, adds radial dimension, and frictional loss is large.
3, spring takies radial dimension space greatly, and whole pump housing volume is increased, and waste material, improves cost.
4, each plunger can only suck liquid separately and discharge, and pump housing external connecting pipe is passed by many, and multi-cylinder work theory is feasible, and practical application is difficult to realize.
Summary of the invention
The present invention is exactly for the problems referred to above, provides a kind of volume little, and structure is simple, easy to process, long service life, high-power radial plunger pump with low cost.
For realizing above-mentioned purpose of the present invention, the present invention adopts following technological scheme, the present invention includes the housing that inside has cavity, and surface of shell is provided with the liquid sucting port being communicated with cavity, its structure outline housing central section is provided with cam by rotating shaft, and cam is provided with at least two plungers by draw ring; The end of each plunger is all arranged in a plunger case, and plunger case end is provided with the liquid entering hole of same cavity connects, is provided with liquid sucting valve in liquid entering hole; The both sides of plunger case are provided with the first hollow trunnion and the second hollow trunnion that same housing matches; Annular high voltage chamber is provided with in described housing; First hollow trunnion of each plunger case is all communicated with annular high voltage chamber, in the first hollow trunnion, annular high voltage chamber is provided with liquid discharging valve; Described surface of shell is provided with the liquid outlet being communicated with annular hyperbaric chamber.
As a preferred embodiment of the present invention, be provided with equilibrium valve in the second hollow trunnion on described each plunger case, housing be provided with the compensating groove be interconnected corresponding to the second hollow trunnion.
Beneficial effect of the present invention: compared with the type of belt drive that 1, oil hydraulic pump of the present invention turns with existing three or two plunger cases turned are horizontal, weight of equipment can be made to be reduced, and reduction amplitude can reach more than 60%.
2, fluid clutch of the present invention is compared with the patent application of application number 200910102304.8, plunger case can swing around the first hollow trunnion and the second hollow trunnion, employing swing structure is located, plunger and plunger case be not by the impact of lateral force, stressing conditions is good, long service life, is applicable to high-pressure work (more than 35MPa) more.
3, oil hydraulic pump of the present invention, its plunger adopts static balance structure and cam engagement, and force-transmitting part is few, and compared with the patent application of application number 200910102304.8, reduce the radial dimension of the pump housing, frictional loss is little.
4, oil hydraulic pump of the present invention uses draw ring to be positioned on cam by plunger, and compared with the spring of documents, volume significantly reduces, and the radial dimension of fluid clutch is reduced further.
5, the unique design of inventive shell can guarantee multiple plunger case efficient combination, realizes concentrating imbibition, discharge opeing, is convenient to the application of oil hydraulic pump in multiple occasion.
Accompanying drawing explanation
Fig. 1 is the structural representation of fluid clutch of the present invention.
Fig. 2 is the side sectional view of Fig. 1.
1 be housing in accompanying drawing, 2 be cavity, 3 be plunger for plunger case, 4 is the first hollow trunnion, 5,6 be plunger slide, 7 be rotating shaft, 8 be draw ring, 9 be outer tube, 10 be cam, 13 be liquid sucting valve, 14 be liquid entering hole, 15 be annular high voltage chamber, 16 be liquid sucting port, 17 be liquid outlet, 18 be liquid discharging valve, 19 be compensating groove for equilibrium valve, 20 is the second hollow trunnion, 21 for pipe, 12 centered by filled nylon, 11.
The present invention includes the housing 1 that inside has cavity 2, housing 1 surface is provided with the liquid sucting port 16 being communicated with cavity 2, in the middle part of housing 1, rotating shaft 7 is provided with cam 12, cam 12 is provided with at least two plungers 5 by draw ring 8; The end of each plunger 5 is all arranged in a plunger case 3, and plunger case 3 end is provided with the liquid entering hole 14 that same cavity 2 is communicated with, and is provided with liquid sucting valve 13 in liquid entering hole 14; The both sides of plunger case 3 are provided with the first hollow trunnion 4 and the second hollow trunnion 20 that same housing 1 matches; Annular high voltage chamber 15 is provided with in described housing 1; First hollow trunnion 4 of each plunger case 3 is all communicated with annular high voltage chamber 15, in the first hollow trunnion 4, annular high voltage chamber 15 is provided with liquid discharging valve 18; Described housing 1 surface is provided with the liquid outlet 17 being communicated with annular hyperbaric chamber 15.
As a preferred embodiment of the present invention, be provided with equilibrium valve 19 in the second hollow trunnion 20 on described each plunger case 3, housing 1 be provided with the compensating groove 21 be interconnected corresponding to the second hollow trunnion 20.Form static balance structure by the cooperation of equilibrium valve 19 and compensating groove 21, counteract the hydraulic thrust of liquid discharging valve 18 one end, be in floating suspension state when ensureing that plunger case 3 works, extend working life.
Described plunger 5 comprises the plunger slide 6 that same draw ring 8 matches; Plunger slide 6 is disposed with from the inside to the outside center tube 11, filled nylon 10 and outer tube 9.Plunger 5 adopts fabricated structure, significantly can reduce the quality of plunger 5.
Described plunger slide 6 is provided with center damping hole and relief groove.When the present invention works, plunger 5 pressure at two ends can be made to balance, make oil hydraulic pump more adapt to work in a high voltage state.
Described plunger case 3 is distributed in cam 12 circumferentially.Plunger 5 can also be distributed in cam 12 circumferentially by the position-limiting action of plunger case 3, can make cam 12 and rotating shaft 7 uniform force, increase the service life.
The ring body of described draw ring 8 to be two cross sections be L shape, two L shape ring bodies are relatively arranged on outside cam 12, are provided with slip ring between two L shape ring bodies; Described plunger slide 6 is arranged between two draw rings 8, and is passed by slip ring.
Below in conjunction with accompanying drawing, one-off process of the present invention is described: during use, rotating shaft 7 is with moving cam 12 to rotate, and cam 12 drives plunger 5 to-and-fro motion in plunger case 3, and plunger case 3 is at the restriction lower swing of the first gudgeon and the second gudgeon; When journey is inhaled in plunger 5 to-and-fro motion, the liquid sucting valve 13 of liquid by plunger case 3 top is sucked; During scheduling, liquid is discharged by liquid discharging valve 18.Housing 1 is provided with annular high voltage chamber 15 in center hole outside, and annular high voltage chamber 15 is connected with each plunger case 3 respectively, and the liquid of being discharged by each plunger 5 is concentrated and discharged.The present invention is made can effectively to ensure multi-cylinder reliably working.
Be understandable that, above about specific descriptions of the present invention, the technological scheme described by the embodiment of the present invention is only not limited to for illustration of the present invention, those of ordinary skill in the art is to be understood that, still can modify to the present invention or equivalent replacement, to reach identical technique effect; Needs are used, all within protection scope of the present invention as long as meet.